I believe I have followed the instructions correctly.
My Windows Vista recognizes my camera. When I run FastPictureViewer Professional, I press Ctrl "T" and I can see the program waiting for an image from my 5D MKII. However, When I take the picture it is not transferred to my computer.
I should explain that I can run my E-3 tethered using EOS utility from Canon.
Does anyone have any suggestions for things I can try?